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Continue to ChatGRB 021004, optical observations - GRB Coordinates Network, 1580 - SIMBAD references: http://simbad.harvard.edu/simbad/sim-ref?querymethod=bib
GRB 021004, optical observations - GRB Coordinates Network, 1580 - SIMBAD references: http://simbad.harvard.edu/simbad/sim-ref?querymethod=bib